Most of the character changes are a matter of intensity and degree, similar to what happens when you color in a black & white sketch.

Then there's the separate issue of characters that were created after the original proposal. Originally I didn't know that Lady Ysobel would need a foil in book two, but she did, and so Lieutenant Burrell came into being. In book three (the one I'm currently writing) he's been elevated to a POV character, and a potential love interest.

Not only does Burrell now have his own character arc, his presence allows me to explore a new side of Lady Ysobel's character. Something that was there all the time, but is now explicit rather than implicit.

Does this answer your question?